Carrefour announces winners of the 3rd Romanian edition of "Challenge of Suppliers" competition   Boulogne-Billancourt‎, France, 2017-Oct-11 — /EPR Retail News/ — The third Romanian edition of Carrefour's "Challenge of Suppliers" competition, organized by Carrefour in all 10 countries in which it operates, ended yesterday, October 2, in Bucharest, with the premiere of the three winners: 1st place…